mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-18 05:28:40 +00:00
345 lines
11 KiB
Python
345 lines
11 KiB
Python
# This file is part of the Trezor project.
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#
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# Copyright (C) 2012-2019 SatoshiLabs and contributors
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3
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# as published by the Free Software Foundation.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the License along with this library.
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# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
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import warnings
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from copy import copy
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from decimal import Decimal
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from typing import TYPE_CHECKING, Any, Dict, Sequence, Tuple
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from . import exceptions, messages
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from .tools import expect, normalize_nfc, session
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if TYPE_CHECKING:
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from .client import TrezorClient
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def from_json(json_dict):
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def make_input(vin):
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if "coinbase" in vin:
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return messages.TxInputType(
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prev_hash=b"\0" * 32,
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prev_index=0xFFFFFFFF, # signed int -1
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script_sig=bytes.fromhex(vin["coinbase"]),
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sequence=vin["sequence"],
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)
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else:
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return messages.TxInputType(
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prev_hash=bytes.fromhex(vin["txid"]),
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prev_index=vin["vout"],
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script_sig=bytes.fromhex(vin["scriptSig"]["hex"]),
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sequence=vin["sequence"],
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)
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def make_bin_output(vout):
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return messages.TxOutputBinType(
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amount=int(Decimal(vout["value"]) * (10 ** 8)),
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script_pubkey=bytes.fromhex(vout["scriptPubKey"]["hex"]),
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)
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return messages.TransactionType(
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version=json_dict["version"],
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lock_time=json_dict.get("locktime", 0),
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inputs=[make_input(vin) for vin in json_dict["vin"]],
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bin_outputs=[make_bin_output(vout) for vout in json_dict["vout"]],
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)
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@expect(messages.PublicKey)
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def get_public_node(
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client,
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n,
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ecdsa_curve_name=None,
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show_display=False,
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coin_name=None,
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script_type=messages.InputScriptType.SPENDADDRESS,
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ignore_xpub_magic=False,
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):
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return client.call(
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messages.GetPublicKey(
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address_n=n,
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ecdsa_curve_name=ecdsa_curve_name,
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show_display=show_display,
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coin_name=coin_name,
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script_type=script_type,
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ignore_xpub_magic=ignore_xpub_magic,
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)
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)
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@expect(messages.Address, field="address")
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def get_address(
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client,
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coin_name,
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n,
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show_display=False,
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multisig=None,
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script_type=messages.InputScriptType.SPENDADDRESS,
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ignore_xpub_magic=False,
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):
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return client.call(
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messages.GetAddress(
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address_n=n,
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coin_name=coin_name,
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show_display=show_display,
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multisig=multisig,
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script_type=script_type,
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ignore_xpub_magic=ignore_xpub_magic,
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)
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)
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@expect(messages.OwnershipId, field="ownership_id")
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def get_ownership_id(
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client,
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coin_name,
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n,
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multisig=None,
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script_type=messages.InputScriptType.SPENDADDRESS,
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):
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return client.call(
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messages.GetOwnershipId(
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address_n=n,
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coin_name=coin_name,
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multisig=multisig,
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script_type=script_type,
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)
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)
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def get_ownership_proof(
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client,
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coin_name,
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n,
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multisig=None,
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script_type=messages.InputScriptType.SPENDADDRESS,
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user_confirmation=False,
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ownership_ids=None,
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commitment_data=None,
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preauthorized=False,
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):
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if preauthorized:
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res = client.call(messages.DoPreauthorized())
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if not isinstance(res, messages.PreauthorizedRequest):
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raise exceptions.TrezorException("Unexpected message")
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res = client.call(
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messages.GetOwnershipProof(
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address_n=n,
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coin_name=coin_name,
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script_type=script_type,
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multisig=multisig,
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user_confirmation=user_confirmation,
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ownership_ids=ownership_ids,
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commitment_data=commitment_data,
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)
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)
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if not isinstance(res, messages.OwnershipProof):
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raise exceptions.TrezorException("Unexpected message")
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return res.ownership_proof, res.signature
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@expect(messages.MessageSignature)
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def sign_message(
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client, coin_name, n, message, script_type=messages.InputScriptType.SPENDADDRESS
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):
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message = normalize_nfc(message)
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return client.call(
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messages.SignMessage(
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coin_name=coin_name, address_n=n, message=message, script_type=script_type
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)
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)
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def verify_message(client, coin_name, address, signature, message):
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message = normalize_nfc(message)
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try:
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resp = client.call(
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messages.VerifyMessage(
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address=address,
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signature=signature,
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message=message,
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coin_name=coin_name,
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)
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)
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except exceptions.TrezorFailure:
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return False
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return isinstance(resp, messages.Success)
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@session
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def sign_tx(
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client: "TrezorClient",
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coin_name: str,
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inputs: Sequence[messages.TxInputType],
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outputs: Sequence[messages.TxOutputType],
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details: messages.SignTx = None,
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prev_txes: Dict[bytes, messages.TransactionType] = None,
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preauthorized: bool = False,
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**kwargs: Any,
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) -> Tuple[Sequence[bytes], bytes]:
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"""Sign a Bitcoin-like transaction.
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Returns a list of signatures (one for each provided input) and the
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network-serialized transaction.
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In addition to the required arguments, it is possible to specify additional
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transaction properties (version, lock time, expiry...). Each additional argument
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must correspond to a field in the `SignTx` data type. Note that some fields
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(`inputs_count`, `outputs_count`, `coin_name`) will be inferred from the arguments
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and cannot be overriden by kwargs.
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"""
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if prev_txes is None:
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prev_txes = {}
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if details is not None:
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warnings.warn(
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"'details' argument is deprecated, use kwargs instead",
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DeprecationWarning,
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stacklevel=2,
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)
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signtx = details
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signtx.coin_name = coin_name
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signtx.inputs_count = len(inputs)
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signtx.outputs_count = len(outputs)
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else:
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signtx = messages.SignTx(
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coin_name=coin_name,
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inputs_count=len(inputs),
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outputs_count=len(outputs),
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)
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for name, value in kwargs.items():
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if hasattr(signtx, name):
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setattr(signtx, name, value)
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if preauthorized:
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res = client.call(messages.DoPreauthorized())
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if not isinstance(res, messages.PreauthorizedRequest):
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raise exceptions.TrezorException("Unexpected message")
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res = client.call(signtx)
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# Prepare structure for signatures
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signatures = [None] * len(inputs)
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serialized_tx = b""
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def copy_tx_meta(tx: messages.TransactionType) -> messages.TransactionType:
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tx_copy = copy(tx)
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# clear fields
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tx_copy.inputs_cnt = len(tx.inputs)
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tx_copy.inputs = []
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tx_copy.outputs_cnt = len(tx.bin_outputs or tx.outputs)
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tx_copy.outputs = []
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tx_copy.bin_outputs = []
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tx_copy.extra_data_len = len(tx.extra_data or b"")
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tx_copy.extra_data = None
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return tx_copy
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this_tx = messages.TransactionType(
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inputs=inputs,
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outputs=outputs,
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inputs_cnt=len(inputs),
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outputs_cnt=len(outputs),
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# pick either kw-provided or default value from the SignTx request
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version=signtx.version,
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)
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R = messages.RequestType
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while isinstance(res, messages.TxRequest):
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# If there's some part of signed transaction, let's add it
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if res.serialized:
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if res.serialized.serialized_tx:
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serialized_tx += res.serialized.serialized_tx
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if res.serialized.signature_index is not None:
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idx = res.serialized.signature_index
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sig = res.serialized.signature
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if signatures[idx] is not None:
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raise ValueError("Signature for index %d already filled" % idx)
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signatures[idx] = sig
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if res.request_type == R.TXFINISHED:
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break
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# Device asked for one more information, let's process it.
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if res.details.tx_hash is not None:
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current_tx = prev_txes[res.details.tx_hash]
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else:
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current_tx = this_tx
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if res.request_type == R.TXMETA:
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msg = copy_tx_meta(current_tx)
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res = client.call(messages.TxAck(tx=msg))
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elif res.request_type in (R.TXINPUT, R.TXORIGINPUT):
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msg = messages.TransactionType()
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msg.inputs = [current_tx.inputs[res.details.request_index]]
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res = client.call(messages.TxAck(tx=msg))
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elif res.request_type == R.TXOUTPUT:
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msg = messages.TransactionType()
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if res.details.tx_hash:
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msg.bin_outputs = [current_tx.bin_outputs[res.details.request_index]]
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else:
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msg.outputs = [current_tx.outputs[res.details.request_index]]
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res = client.call(messages.TxAck(tx=msg))
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elif res.request_type == R.TXORIGOUTPUT:
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msg = messages.TransactionType()
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msg.outputs = [current_tx.outputs[res.details.request_index]]
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res = client.call(messages.TxAck(tx=msg))
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elif res.request_type == R.TXEXTRADATA:
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o, l = res.details.extra_data_offset, res.details.extra_data_len
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msg = messages.TransactionType()
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msg.extra_data = current_tx.extra_data[o : o + l]
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res = client.call(messages.TxAck(tx=msg))
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if not isinstance(res, messages.TxRequest):
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raise exceptions.TrezorException("Unexpected message")
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for i, sig in zip(inputs, signatures):
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if i.script_type != messages.InputScriptType.EXTERNAL and sig is None:
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raise exceptions.TrezorException("Some signatures are missing!")
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return signatures, serialized_tx
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@expect(messages.Success, field="message")
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def authorize_coinjoin(
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client,
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coordinator,
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max_total_fee,
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n,
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coin_name,
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fee_per_anonymity=None,
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script_type=messages.InputScriptType.SPENDADDRESS,
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):
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return client.call(
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messages.AuthorizeCoinJoin(
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coordinator=coordinator,
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max_total_fee=max_total_fee,
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address_n=n,
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coin_name=coin_name,
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fee_per_anonymity=fee_per_anonymity,
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script_type=script_type,
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)
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)
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